UVEPROM
Austin Semiconductor, Inc.
SMJ27C040
CAPACITANCE OVER RECOMMENDED RANGES OF SUPPLY VOLTAGE AND OPERATING
FREE-AIR TEMPERATURE, f = 1MHz (V
CC
= V
PP
= 5V ±0.5V)*
PARAMETER
C
i
C
o
Input capacitance
Output capacitance
TEST CONDITIONS
V
I
= 0V
V
O
= 0V
TYP**
4
8
MAX
8
12
UNIT
pF
pF
* Capacitance is sampled only at initial design and after any major change.
** All typical values are at T
A
= 25°C and nominal voltages.
SWITCHING CHARACTERISTICS OVER RECOMMENDED RANGES OF SUPPLY VOLTAGE
AND OPERATING FREE-AIR TEMPERATURE
1,2
PARAMETER
t
a(A)
t
a(E)
t
en(G)
t
dis
t
v(A)
Access time from address
Access time from chip enable
Output enable time from G\
Output disable time from G\ or E\, whichever
occurs first
Output data valid time after change of
address, E\, or G\, whichever occurs first
1
1
TEST
CONDITIONS
2, 3
-12
120
120
-15
150
150
50
0
0
50
MIN MAX MIN MAX
UNIT
ns
ns
ns
ns
ns
(see Figure 2)
Input t
r
< 20ns
Input t
f
< 20ns
0
0
50
50
NOTES:
1. Value calculated from 0.5V delta to measured output level. This parameter is only sampled and not 100% tested.
2. Common test conditions apply for t
dis
except during programming.
3. For all switching characteristics the input pulse levels are 0.4V to 2.4V. Timing measurements are made at 2V for logic high and 0.8V for logic low. (Figure 2)
SWITCHING CHARACTERISTICS FOR PROGRAMMING: V
CC
= 6.5V and V
PP
= 13V (SNAP!
Pulse), T
A
= 25°C
t
dis(G)
t
en(G)
PARAMETER
Output disable time from G\
Output enable time from G\
MIN
0
MAX
100
150
UNIT
ns
ns
TIMING REQUIREMENTS FOR PROGRAMMING
t
h(A)
t
h(D)
t
su(A)
t
su(E)
t
su(G)
t
su(D)
t
su(Vpp)
t
su(Vcc)
SMJ27C040
Rev. 1.0 9/01
Hold Time, Address
Hold Time, Data
SNAP! Pulse Programming Algorithm
MIN
0
2
95
2
2
2
2
2
2
TYP
MAX
UNIT
µs
µs
t
w(PGM)
Pulse Duration, Program
Setup Time, Address
Setup Time, E\
Setup Time, G\
Setup Time, Data
Setup Time, V
PP
Setup Time, V
CC
100
105
µs
µs
µs
µs
µs
µs
µs
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
6
AUSTIN [ AUSTIN SEMICONDUCTOR ]
